if you're using a typical 'waterfarm' setup, you have an airpump, that forces your nutrient solution thru a surrounding ring, that drips around your plant ... (hope I'm understanding which type you have) ... I played around with my timers quite a bit, and once the plant is of any size, was cycling the pump about 15 minutes ON, 1 hour OFF ... it doesn't seem too critical, as I have tried lots of schedules, not a lot of difference, really ... one guy I know runs his plants on a pretty dry schedule, and I know some that run them almost constantly ... guess it's whatever your plant likes ... one thing that DOES help a lot, is to add an airstone in the bottom of your reservoir, gets oxygen to those roots ... (my setup in photo has more lines, etc than you will, as I converted mine to re-circulate, etc) ... :thumbsup: